Beresford, a serving flag officer and distinguished veteran of naval campaigns in the Mediterranean, North America and the West Indies, was the acknowledged illegitimate son of the 1st marquis of Waterford, probably by his eventual wife.
Appointed a second naval lord by the incoming Peel ministry, 24 Dec. 1834, at the 1835 general election he was parachuted into the admiralty borough of Chatham, where he issued an address declaring his willingness ‘to grant every extension of civil and religious indulgence consistent with the security of the altar and throne’, and topped the poll.
A silent Member in his last parliament, Beresford was in Peel’s minorities on the speakership, 19 Feb., the address, 21 Feb., and the division on the Irish church which brought the ministry down, 2 Apr. 1835. Thereafter he gave steady support to the Conservative opposition to the reappointed Whig ministry on most major issues, including Irish municipal reform and reform of the Irish church, and divided against the abolition of military flogging, 13 Apr. 1836, inquiry into the reappointment of Lord Brudenell, 3 May 1836, and the ballot, 7 Mar. 1837. At that year’s general election he made way for the Whig nominee at Chatham and ‘retired entirely from public affairs’, residing ‘mostly at his Yorkshire seat’.
Beresford died in October 1844 at Bedale Hall, the Yorkshire seat of his eldest son and successor in the baronetcy George de la Poer Beresford (1811-73), Conservative Member for Athlone, 1841-2.
